Hi @nblp

You can use setEncodedBuffer() to create the response message from the buffer you got from getEncodedBuffer().

So, in your recorder app you can save the encoded buffer:

const rfa::common::Msg& msg = event.getMsg();
rfa::common::Buffer tempBuffer = msg.getEncodedBuffer();
//Save tempBuffer.c_buf() and tempBuffer.size()

Then when you want to playback:

//Load saved tempBuffer.c_buf() and tempBuffer.size() to _str and _size
rfa::common::Buffer tempBuffer;
tempBuffer.setFrom(_str, _size);

RespMsg respMsg;
respMsg.setEncodedBuffer(tempBuffer);

Playing back from the RFA trace file is trickier.

The API does not have any function that helps you read the XML trace file. You have to parse the XML trace file and construct the message yourself.